'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
/* 压缩js */
var webpack = require('webpack')
const CompressionPlugin = require('compression-webpack-plugin')
const productionGzipExtensions = ['js', 'css']
const isProduction = process.env.NODE_ENV === 'production'
/* 压缩js */
function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || 'group-wxapp-pc-manage' // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    port: port,
    open: false,
    hot: true, // 自动保存
    // overlay: {
    //   warnings: false,
    //   errors: true
    // }
    // before: require('./mock/mock-server.js')

    proxy: {
      '/apiproxy': {
        target: 'http://8.140.56.19:8989/group-wxapp',
        secure: false, // 如果是https接口，需要配置这个参数
        ws: false, // 是否代理websockets
        changeOrigin: true,
        pathRewrite: {
          '^/apiproxy': ''
        }
      }
    }
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    },
    plugins: [
      // Ignore all locale files of moment.js
      new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
      // 配置compression-webpack-plugin压缩
      new CompressionPlugin({
        algorithm: 'gzip', // 使用gzip压缩
        test: /\.js$|\.html$|\.css$/, // 匹配文件名
        filename: '[path].gz[query]', // 压缩后的文件名(保持原文件名，后缀加.gz)
        minRatio: 1, // 压缩率小于1才会压缩
        threshold: 10240, // 对超过10k的数据压缩
        deleteOriginalAssets: false // 是否删除未压缩的源文件，谨慎设置，如果希望提供非gzip的资源，可不设置或者设置为false（比如删除打包后的gz后还可以加载到原始资源文件）
      })
    ],

    externals: {
      // CDN 的 Element 依赖全局变量 Vue， 所以 Vue 也需要使用 CDN 引入
      vue: 'Vue',
      // 属性名称 element-ui, 表示遇到 import xxx from 'element-ui' 这类引入 'element-ui'的，
      // 不去 node_modules 中找，而是去找 全局变量 ELEMENT
      'element-ui': 'ELEMENT'
    }
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ])
    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module.rule('svg').exclude.add(resolve('src/icons')).end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()
    config.when(process.env.NODE_ENV !== 'development', (config) => {
      // 生产环境删除所有console.log
      config.optimization.minimizer('terser').tap((args) => {
        args[0].terserOptions.compress.drop_console = true
        args[0].terserOptions.compress.drop_debugger = true
        args[0].terserOptions.compress.warnings = false
        return args
      })
      config
        .plugin('ScriptExtHtmlWebpackPlugin')
        .after('html')
        .use('script-ext-html-webpack-plugin', [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end()
      config.optimization.splitChunks({
        chunks: 'all',
        cacheGroups: {
          libs: {
            name: 'chunk-libs',
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: 'initial' // only package third parties that are initially dependent
          },
          elementUI: {
            name: 'chunk-elementUI', // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: 'chunk-commons',
            test: resolve('src/components'), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      })
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk('single')
    })
  }
}
